ConceptVocabulary Gap
Vocabulary Gap
The phenomenon in which inconsistency between query terms and document wording causes keyword retrieval to miss relevant documents. Typical manifestations include synonym substitution, differences between broader and narrower terms, and differences between colloquial and written language, which require semantic retrieval to mitigate.
Timeline (last 90 days)
Oct 15
The applicable scenario for vector retrieval is the vocabulary gap, that is, when the user's query wording differs from the document's wording, causing keyword retrieval to miss recalls, for example when the user asks "how to terminate the lease before expiry" while the document says "early termination of the rental contract".
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